Safety crank



July 17, l1923.

v 1,462,002 l. C. BICE SAFETY'CRANK Filed June 25, 1921 3 sheets-sheeht 1 wrm/ENTER Ivlm 111311312 July 17, 1923. 1,462,002

l. c. BICE l SAFETY CRANK Filed June 23, 1921 3 sheets-sheet l2' NVENTOR IVR OBCE.

,j l BY y Patented July 17, 1923..

imam?.

UNITED' STA-TES NPATENT .ort-icsy g ivoa enen-Lus :eicnjor Granneman, caranto, c.an inri'.

SAFETY enana.

` Application led June 23, 1921. Serial No; 479,914. il

To all 'whom t may concern.:

Be 1t known that I, lvoR C. Bion, a citi zen of the Dominion of Canada,ires1d1ng at Clandeboym in the county of Middlesex and struction, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawings and pointed Outin the claim hereunto appended. f I

Figure 1 isa perspective view illustrating' an embodiment of my present invention.

Figure 2 is atop plan view illustrating my present invention embodied with an automobile engine. s

Figure 3 is an end elevation illustrating the ratchet member in detail.

Figure t is a fragmental perspective view of the member functioned to disengage the crank shaft.

Figure 5 is a similar View of one of the members employed in the disengaging of the crank shaft.

Figure 6 is a fragmental perspective Yicw of the ratchet disang'aging member.

Referring to the drawings, like numerals designate like parts in the various drawings.

The numeral 7 indicates the internal coinbustion engine, 8 the crank shaft. liefen ring to Figure 2, which more clearly illustrates the embodiment of my present invention, the numeral 9 indicates the frame of the chassis of the automobile on which the internal combustion engine is mounted. 10 and 11 illustrate the transverse angle iron in which the crank shaft journals are posi tioned. The outer end of the crank shaft is square in shape and has crank 12 positioned on its outer end for manual actuation. A casing 13 is positioned on the outer periphery of the angle iron and has lug members 14 extending outwardly from it. Face plate 15 is substantially connected y to rthe lug member 11i by means ofthebolt'l positioned in threaded apertures configuratedin the lug members 14. Ratchet wheel 17` is mounted on the crankshaft intermediate the l outer periphery of the anglev iron 10 and the face plate 15, and has teeth 18 configurated onits circumferential periphery. A plurality of dogs,r indicated by the numeral 19, are positioned on the bolts' 2O,` substany `tially mounted on the angle iron 10. These l dog members are'engageable with the teeth 18 of the ratchet member 17 and are tensioned against the'same by spr1ngs'21; Coil spring 22 is positioned over the square end of the crank shaft andis functioned. to keep Y the crank shaft indisengage'd position. l The ydisengagingmembers consist of afbody member 23 loosely positioned on the rounded portion of the crank shaft indicated by the y nun'ie'ral S.

nerperipl'iery of the angle ironllOQwThe `coily spring is attached on one end to the `crank shaft 8 vbyfmea'ns of a rivet 25 and at Coil spring `24 is positionedin- '4 'termediate the body member23 and the in? its opposite endto the body member 23 by i the rivet 26. Rod 27 is transversely'positioned through the crank shaft 3 and through the triangular shaped aperture 28 positioned transversely in `the body mc1nbcr'23. 'The disengaging members consist of dogs 29 pivotally mounted on cach side of the body member 23 and have transverse openings 30 configurated in them forv engagement with the lever arm 31, pivotally mounted on they body member 23. Springs 32, substantially mounted on the body member 23, tension against the dog members 29, and are functioned to keep the dog members29 normally in engagement with the lever member 31.

Member33 is positioned on the end of tho crank shaft as indicated diagrammatically and is functioned toengage with the body member 23. Opening 3e is positionedon its outer face forengagement with the end 35 of the crank shaft 8. Openings 36 are positioned on the circumferential periphery for engagement with the lever members 31. The numeral 37 indicates a portion slanted in alignment with the outer face of the member 33 and functioned t0 re-engage the lever and dog members as in their` normal position. Abutment 38 is positioned as illustrated for engagement with theleverr members 31.

When it is desired tocrank the engine,

handle l2 positioned on the crank shaft is graspedand the crank shaft l2 pushed inwardly until the body member 23 engages with themember 33. In this position, the

vlever members 31 will be engaged with the openings 36 configurated on the member 33.

When the crank is actuated, the lever members 31 rest against the abutment 38. The coil spring 24 is functioned to exert enough tension to keep the spring 32 pressed against the lever member 31 and thus keep the lever members 31 normally engaged with the dog membersy 29. Should the engine now back-fire, the body member 23 will turn Side Ways and the transverse rod 27 will tension against the angular face of the dog 1nembers 29. One of the dog members 19 will engage with one of the teeth 18 positioned on the circumferential periphery of the ratchet member 17 and prevent rotation of the crank Shaft; TheV transverse rod 27 will now force the dog members29 backward, thus disengaging the'lever members. The lever members Will non7 be vertical in position, in alignment Withthe body member 28.

lWhen itis desired to re-engage the lever member 3l With the dog member 29, the crank 12 is actuated in the opposite direction andthe en'dfof the lever member Will slide along the angular lsurface 37 andthe f lever member 31 'will then re-engage the dog' member 29. l

` The spring 24 is tensioned to turn the engine crank shaft in starting the engine, but will `give on. the sudden impulse of a back fire Whichresults in the angular sides of the members 29 being thrust against the cross rod '27 which is fixed in the shaft 8, With the i p result that themember 29 is forced against the spring 32 which, givingl Way allows the members 3l to be displaced in a l,vertical position relative to the abutments 38, thus disconnecting the engine crank shaft from the starting handle. The spring 32 is also designed to be of suliicient tension to hold the members 31 in operative position relative to the abutments 38 in the starting operation, but of insuiiicient tension to resist the thrust of the rod 27 against the members 29 in case of back fire.

That I claim as new is: A safety cranking device for automobile engines, comprising, in combination, a hand relation thereto; engaging means at the for- `ward end of said boX-like member to vengage similar means on the end of the crank shaft of the engine, spring means for-Withdrawing said box-like member from said engine crank shaft, said pin cooperating with said ypair of paWl members to release said boxlike member from yengagement with said engine crank shaft on a' retrograde movement of the engine crank shaft. l

v In testimony whereof, I aiix my signature in the presence of tWo Witnesses. .Y a

v i v 'IVOR CHARLES BICE.

Witnesses:

M.r L. BANTING, R. J. CARTER. 

